820-3662 water damaged PPVCC_S0_CPU not stable .

[Sellicks]

Water damaged 820-3662
I have replaced U7310 mac boots up but PPVCC_S0_CPU goes up and down around 1.769v 1.766v eventually restarts.
L7310 pin1 1.770v pin 2 1.770v
L7320 pin1 1.770v pin 2 1.69v
L7330 pin1 1.772v pin 2 1.77v
not stable as well
Thank you in advance .

 

[aprendiz]

Does it chimes?? Can you start on SMC bypass??

 

[Sellicks]

Yes it does boot normal in to OS X everything works It doesnt restart anymore but PPVCC_S0_CPU values are still the same, not stable

ASD all green except bluetooth mac address match.

 

[dukefawks]

Could be anything in the Vcore circuit. I would start with replacing U7200, U7310/20/30 all together.